I prefer the K10 for bass by about 5%, but noble's shape doesn't work for my ears (I'm in the deep minority here afaik, but they fall out on me).
I prefer the Zeus for mids and highs, and they stay in my ear.
They're both great options provided they fit in your ears. I think the broader opinion is that the K10 is a little more smooth/laid back, and the Zeus is more forward and detail oriented.
I usually keep IEMs and headphones handy at both ends of that spectrum because I listen to a wide variety of music.